During a tech presentation, Michele Giacalone, Graphics Programmer at DECK13 Interactive, revealed that The Surge will be powered by the Fledge Engine. The Fledge Engine is an in-house engine that was created by Deck13. And while appears to support DX12 and Async Compute, the PC version – at launch – will only support DX11.
It will be interesting to see whether Deck13 will release a DX12 patch for The Surge, and whether there will be any performance benefits. From the looks of it, Async Compute can be used in order to calculate Screen Space Reflections (a feature that The Surge will support).
The Surge is currently planned for a 2017 release!